Hi , im using iot2050 advance fs9 and im facing with this problem that after installation is complete, when i try to change the serial mode from default to RS485 , it doesn't take effect, and after reboot again with mel-setup command i find that as default. 

Also ive tested different setup time and hold time which i dont know if it could be the reason or not. 

Would you please help?

I should say that i could do it one time but after another fresh installation from service stick , i could not change it anymore. 

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Split from iot2050setup RS485.

Hans Wilhelm

Hi , im using iot2050 advance fs9 and im facing with this problem that after installation is complete, when i try to change the serial mode from default to RS485 , it doesn't take effect, and after reboot again with mel-setup command i find that as default. 

Also ive tested different setup time and hold time which i dont know if it could be the reason or not. 

Would you please help?

I should say that i could do it one time but after another fresh installation from service stick , i could not change it anymore. 

Please don't post twice for the same problem.

You also made an own topic:

Change mode of external serial